Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsVoltage Regulators3 A Adjustable Voltage Regulator, Positive

www.fairchildsemi.com

Rev. 1.0.2

Features

• Output Adjustable Between 1.2V and 33V

• Guaranteed 3A Output Current

• Internal Thermal Overload Protection

• Load Regulation (Typ: 0.1%)

• Line Regulation (Typ: 0.015%/V)

• Internal Short Circuit Current Limit

• Output Transistor Safe-Area Compensation

Description

The LM350 is an adjustable 3-terminal positive voltage

regulator capable of supplying in excess of 3.0A over an

output voltage range of 1.2V to 33V

1. Adj 2. Output 3. Input

TO-220

(Single Gauge)

Internal Block Diagram

VOLTAGE

REFERENCE

PROTECTION

CIRCUITRY

ADJUSTABLE

OUTPUT

INPUT

REF

LM350

3-Terminal 3A Positive Adjustable Voltage

Regulator

Summary of content (8 pages)

PAGE 1
www.fairchildsemi.com LM350 3-Terminal 3A Positive Adjustable Voltage Regulator Features Description • • • • • • • The LM350 is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of 3.0A over an output voltage range of 1.2V to 33V Output Adjustable Between 1.2V and 33V Guaranteed 3A Output Current Internal Thermal Overload Protection Load Regulation (Typ: 0.1%) Line Regulation (Typ: 0.
PAGE 2
LM350 Absolute Maximum Ratings Parameter Symbol Value Unit Input Output Voltage Differential VI - VO 35 VDC Lead Temperature (Soldering, 10sec) TLEAD 300 °C PD Internally limited - Operating Temperature Range TOPR 0 ~ +125 °C Storage Temperature Range TSTG -65 ~ +150 °C Power Dissipation Electrical Characteristics (VI-VO = 5V, IO = 1.5A, TJ = 0°C to +125°C; PD ≤ PDMAX, unless otherwise specified) Parameter Line Regulation (Note1) Load Regulation (Note1) Symbol Conditions Min.
PAGE 3
LM350 Typical Performance Characteristics Figure 1. Load Regulation Figure 2. Current Limit Figure 3. Adjustment Pin Current Figure 4. Dropout Voltage Figure 5. Temperature Stability Figure 6.
PAGE 4
LM350 Typical Performance Characteristics (Continued) 4 Figure 7. Ripple Rejection vs Vo Figure 8. Ripple Rejection vs Io Figure 9. Ripple Rejection vs Frequency Figure 10. Output Impedance Figure 11. Line Transient Response Figure 12.
PAGE 5
LM350 Typical Application LM350 IN Input OUT I1 ADJ Output R1 120 IADJ CI 0.1uF CO 1uF R2 Figure 13. CI : CI is required if the regulator is located an appreciable distance from power supply filter. CO: Output capacitors in the range of 1μF to 100μF of aluminum or tantalum electronic are commonly used to provide improved output impedance and rejection of transients. In operation, the LM350 develops a nominal 1.25V reference voltage, VREF, between the output and adjustment terminal.
PAGE 6
LM350 Mechanical Dimensions Package Dimensions in millimeters TO-220 [ SINGLE GAUGE ] 6
PAGE 7
LM350 Ordering Information Product Number Package Operating Temperature LM350T TO-220 (Single Gauge) 0°C to +125°C 7
PAGE 8
LM350 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.